Graphics, display and media: interview prep

Interview questions

Key points for each answer are in the app's question bank.

1. How much memory does a 480×272 RGB565 framebuffer need? And double-buffered?Basic
2. What causes screen tearing, and how does double buffering prevent it?Intermediate
3. What is partial refresh, and when is it better than full-frame rendering?Intermediate
4. What does a 2D GPU like DMA2D accelerate?Intermediate
5. Integrate a capacitive touch controller over I2C.Intermediate
6. What do lv_tick and lv_timer_handler do in LVGL?Basic
7. RGB565 versus ARGB8888: trade-offs?Basic
8. Compare SPI, parallel RGB and MIPI DSI display interfaces.Intermediate

Hands-on challenges

Design rounds

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